Perhaps you should try some spelling variations:
"coder coder _ interval problem" » "coder coder _ internal problems" (Expand search), "coder coder _ external problem" (Expand search), "coder coder _ interface problems" (Expand search), "coder decoder _ interval problem" (Expand search), "code code _ interval problem" (Expand search), "decoder codec _ interval problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search), "manim python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder _ interval problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder _ interval problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder _ interval problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder _ interval problem") OR ("api python python python programming"))*.